OK, so I will say that for the most part, I am happy with it. That being said, I had to make some changes to get it that way.First off, if you place this under an axle, you have to have your head and body under the vehicle to operate the air valve. This is bit disconcerting. I made a secondary valve on an extended airline so that I can add air while not under the vehicle. Once jacked up, you may choose to close the primary valve to make sure it holds air.Second, as mentioned by others before, almost EVERY bolt will be loose. One would think that this would be a simple check during production. So do yourself a favor and tighten EVERYTHING!!! Including hidden bolts on the bottom.Third, and will will require a little disassembling. Inside there is a series of steel tubes that slide in and out of each other to maintain vertical alignment. There is "some" grease on these. My suggestion is to remove the top plate and lather those tubes up with grease. Besides, that way you can use locktite on the screws when you re-assemble it.With those simple modifications, I think that it will provide years of service.As far as the actual working of it goes. My rig weighs around 5500#. If will lift it very quickly. I also like that fact that it is more compact than a floor jack, and is easier to carry.
Rob 
